1277125 has 16 divisors (see below), whose sum is σ = 1690416. Its totient is φ = 960000.

The previous prime is 1277113. The next prime is 1277137. The reversal of 1277125 is 5217721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1277113) and next prime (1277137).

It can be written as a sum of positive squares in 8 ways, for example, as 91204 + 1185921 = 302^2 + 1089^2 .

It is not a de Polignac number, because 1277125 - 2⁵ = 1277093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1277125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1825 + ... + 2425.

It is an arithmetic number, because the mean of its divisors is an integer number (105651).

2^1277125 is an apocalyptic number.

It is an amenable number.

1277125 is a deficient number, since it is larger than the sum of its proper divisors (413291).

1277125 is an equidigital number, since it uses as much as digits as its factorization.

1277125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 623 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 1277125 is about 1130.0995531368. The cubic root of 1277125 is about 108.4953525726.

The spelling of 1277125 in words is "one million, two hundred seventy-seven thousand, one hundred twenty-five".